raefactor: remove check_copyright.sh, embed into workflow yaml file

.github/workflows/copyright_check.yml

@@ -14,4 +14,53 @@ jobs:
     runs-on: ubuntu-22.04
     steps:
       - uses: actions/checkout@v4
-      - run: /bin/bash check_copyright.sh
+      - name: Run check
+        run: |
+          bash - << 'SCRIPT'
+
+          # Get the current year
+          current_year=$(date +"%Y")
+
+          # Ignore files and directories
+          ignore_files="(.git|node_modules|build|dist|temp|check_copyright.sh)"
+
+          # Directory to search; default is current directory, customize as needed
+          search_dir="."
+
+          # Pattern to look for: 'Copyright (c)'
+          pattern="Copyright (c)"
+
+          exit_code=0
+
+          # Find files containing the copyright notice
+          echo "Checking files in $search_dir for outdated copyright years..."
+          echo "Current year is $current_year."
+
+          # Use find to iterate over files, redirecting into while loop to avoid subshell
+          find $search_dir -type f -print0 > tmp.$$ || exit 1
+          while IFS= read -r -d $'\0' file; do
+              # Skip files in the ignore list
+              if [[ "$file" =~ $ignore_files ]]; then
+                  continue
+              fi
+
+              # Use grep to find the line and awk to extract the year
+              year_line=$(grep "$pattern" "$file")
+
+              if [[ -n "$year_line" ]]; then
+                  # Extract year assuming the year is after 'Copyright (c)'
+                  year=$(echo "$year_line" | grep -E -oh "[0-9]{4}-[0-9]{4}")
+                  year=$(echo "$year" | awk -F'-' '{print $2}')
+
+                  # Check if the extracted year is not equal to the current year
+                  if [[ "$year" -ne "$current_year" ]]; then
+                      echo "Outdated copyright year ($year) in file: $file"
+                      exit_code=1
+                  fi
+              fi
+          done < tmp.$$
+          rm tmp.$$  # Clean up temporary file
+
+          echo "Check complete."
+          exit $exit_code
+          SCRIPT